Download or read book Volumetric Phased Arrays for Satellite Communications written by William Chauncey Barott and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The high amount of scientific and communications data produced by low earth orbiting satellites necessitates economical methods of communication with these satellites. A volumetric phased array for demonstrating horizon-to-horizon electronic tracking of the NASA satellite EO-1 was developed and demonstrated. As a part of this research, methods of optimizing the elemental antenna as well as the antenna on-board the satellite were investigated. Using these optimized antennas removes the variations in received signal strength that are due to the angularly dependent propagation loss exhibited by the communications link. An exhaustive study using genetic algorithms characterized two antenna architectures, and included optimizations for radiation pattern, bandwidth, impedance, and polarization. Eleven antennas were constructed and their measured characteristics were compared to those of the simulated antennas. Additional studies were conducted regarding the optimization of aperiodic arrays. A pattern-space representation of volumetric arrays was developed and used with a novel tracking algorithm for these arrays. This algorithm allows high-resolution direction finding using a small number of antennas while mitigating aliasing ambiguities. Finally, a method of efficiently applying multiple beam synthesis using the Fast Fourier Transform to aperiodic arrays was developed. This algorithm enables the operation of phased arrays combining the benefits of aperiodic element position with the efficiency of FFT multiple beam synthesis. Results of this research are presented along with the characteristics of the volumetric array used to track EO-1. Experimental data and the interpretations of that data are presented, and possible areas of future research are discussed.
Download or read book Phased Arrays for Radio Astronomy Remote Sensing and Satellite Communications written by Karl F. Warnick and published by Cambridge University Press. This book was released on 2018-07-26 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discover a modern approach to the analysis, modeling and design of high sensitivity phased arrays. Network theory, numerical methods and computational electromagnetic simulation techniques are uniquely combined to enable full system analysis and design optimization. Beamforming and array signal processing theory are integrated into the treatment from the start. Digital signal processing methods such as polyphase filtering and RFI mitigation are described, along with technologies for real-time hardware implementation. Key concepts from interferometric imaging used in radio telescopes are also considered. A basic development of theory and modeling techniques is accompanied by problem sets that guide readers in developing modeling codes that retain the simplicity of the classical array factor method while incorporating mutual coupling effects and interactions between elements. Combining current research trends with pedagogical material suitable for a first-year graduate course, this is an invaluable resource for students, teachers, researchers, and practicing RF/microwave and antenna design engineers.
Download or read book Systems Engineering of Phased Arrays written by Rick Sturdivant and published by Artech House. This book was released on 2018-11-30 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phased arrays, while traditionally used in radar systems, are now being used or proposed for use in internet of things (IoT) networks, high-speed back haul communication, terabit-per-second satellite systems, 5G mobile networks, and mobile phones. This book considers systems engineering of phased arrays and addresses not only radar, but also these modern applications. It presents a system-level perspective and approach that is essential for the successful development of modern phased arrays. Using practical examples, this book helps solve problems often encountered by technical professionals. Thermal management challenges, antenna element design issues, and architectures solutions are explored as well as the benefits and challenges of digital beam forming. This book provides the information required to train engineers to design and develop phased arrays and contains questions at the end of each chapter that professors will find useful for instruction.
Download or read book Recent Advances in Satellite Aeronautical Communications Modeling written by Grekhov, Andrii Mikhailovich and published by IGI Global. This book was released on 2019-03-15 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern systems and means of aeronautical radio communication are continuously being improved, but without the development of new technical means, the aviation industry suffers. The development of more innovative plans of aviation technology are needed in order to respond to the ever-increasing standard of aviation technology. Recent Advances in Satellite Aeronautical Communications Modeling is devoted to the modeling of satellite communication channels for aircraft and RPAS/UAV using the Matlab Simulink and NetCracker software. Featuring research on topics such as channel coding, microwave emitters, and array modeling, this book is ideally designed for scientists, engineers, air traffic controllers, managers, researchers, and academicians.
Download or read book Development of Multiple beam Ku band Phased Arrays for Satellite Communications written by A. I. Zaggloul and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to Active Phased Arrays written by Thomas Sikina and published by . This book was released on 2023-03-31 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the beginning of the 21st century, the phased array is recognized as the essential technology for a wide variety of contemporary systems that extend human awareness in surveillance and sensing techniques. These range from advanced radars used for target surveillance, tracking, and identification, to sensors used for terrestrial, sea, and space applications, to precision radars used for air traffic control and landing, to advanced Satellite Communications (SATCOM) systems, to Fifth- Generation (5G) communications networks and their backhaul links. This book will cover the fundamentals of phased array systems, including contemporary and advanced methods. The principles apply to both high capability sensors and low-cost systems. Applications range from advanced and commercial radars to remote sensing, and multiple channel communications. The subject matter includes: an introductory overview, fields and waves analysis, domain analysis, fundamentals of array theory, far field synthesis, Floquet theory, aperture weighting functions, impedance and mutual coupling theory, aperture design, beamforming methods, feed networks, array error analysis, system requirements and sizing, and system design. An emphasis of this work is the array fundamentals that can be realized by analog, digital or hybrid beamforming methods, reflecting perceived trends in the industry. The text also includes ample practice cases, with examples and illustrations.
Download or read book Design of a K Band Transmit Phased Array For Low Earth Orbit Satellite Communications written by and published by . This book was released on 2000 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Adaptive Array Systems written by Ben Allen and published by John Wiley & Sons. This book was released on 2006-02-03 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last fifty years, extensive studies have been carried out worldwide in the field of adaptive array systems. However, far from being a mature technology with little research left to tackle, there is seemingly unlimited scope to develop the fundamental characteristics and applications of adaptive antennas for future 3G and 4G mobile communications systems, ultra wideband wireless and satellite and navigation systems, and this informative text shows you how! Provides an accessible resource on adaptive array fundamentals as well as coverage of adaptive algorithms and advanced topics Analyses the performance of various wideband beamforming techniques in wideband array processing Comprehensively covers implementation issues related to such elements as circular arrays, channel modelling and transmit beam forming, highlighting the challenges facing a designer during the development phase Supports practical implementation considerations with detailed case studies on wideband arrays, radar, sonar and biomedical imaging, terrestrial wireless systems and satellite communication systems Includes examples and problems throughout to aid understanding Companion website features Solutions Manual, Matlab Programs and Electronic versions of some figures Adaptive Array Systems is essential reading for senior undergraduate and postgraduate students and researchers in the field of adaptive array systems. It will also have instant appeal to engineers and designers in industry engaged in developing and deploying the technology. This volume will also be invaluable to those working in radar, sonar and bio-medical applications.
Download or read book Advanced Array Systems Applications and RF Technologies written by Nicholas Fourikis and published by Academic Press. This book was released on 2000-05-31 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Array Systems, Applications and RF Technologies adopts a holistic view of arrays used in radar, electronic warfare, communications, remote sensing and radioastronomy. Radio frequency [RF] and intermediate frequency [IF] signal processing is assuming a fundamental importance, owing to its increasing ability to multiply a system's capabilities in a cost-effective manner. This book comprehensively covers the important front-end RF subsystems of active phased arrays, so offering array designers new and exciting opportunities in signal processing. This book: * provides an up to date record of existing systems from different applications * explores array systems under development * bridges the gap between textbook coverage of idealized phased arrays and practical knowledge of working phased arrays * recognises the significance of cost to the realization of phased arrays * discusses future advances in the field that promise to deliver even more affordable arrays ['intelligent' or self-focussing/-cohering arrays] Engineers and scientists in the radar and RF technology industry will welcome the detailed description of array elements, polarisers, T/R modules and beamformers in Advanced Array Systems, Applications and RF Technologies. This book is also appropriate for postgraduate and advanced undergraduate students in electronic engineering, and for technical managers, researchers and students in the fields of radioastronomy and remote sensing. This book is a volume in the Signal Processing and its Applications series, edited by Richard Green and Truong Nguyen.
Download or read book Phased Array Systems Technology written by and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 2000 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume constitutes the conference proceedings of the IEEE International Symposium on Phased Array Systems and Technology 2000. Topics covered include: modules and components; phased arrays for mobile communications; digital beamforcing; direction finding; system optimization; and more.
Download or read book Design of a K band Transmit Phased Array for Low Earth Orbit Satellite Communications written by Thomas Watson and published by . This book was released on 2000 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Array Antenna Conference Held at Naval Electronics Laboratory Center San Diego California on 22 24 February 1972 Volume 1 written by J. H. Provencher and published by . This book was released on 1972 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Phased arrays, A future; Vertical array of spirals for hemispheric coverage; Cylindrical and conical array investigations; A cylindrical phased-array antenna for air traffic control; Solid-state aircraft IFF transponder array; Solid-state phased arrays for satellite communications; Solid-state aperture despun antenna; Stripline strap-on antenna array; A new simulator technique for phased arrays; Decision-theoretic parallel processing arrays; An array synthesis technique for sidelobe control; Beam steering control system for a cylindrical array; Pattern analysis of wideband circular sector arrays; Images of antennas by spectrum analysis of microwave holograms; Analysis of antennas on aircraft; A 16-element frequency-locked bulk-effect array; Mair solid-state array.
Download or read book Electronically Scanned Arrays written by Robert J. Mailloux and published by Morgan & Claypool Publishers. This book was released on 2007 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a compact but comprehensive treatment of the scanned array, from the underlying basis for array pattern behaviour to the engineering choices leading to successful design. The book describes the scanned array in terms of radiation from apertures and wire antennas and introduces the effects resulting directly from scanning.
Download or read book High sensitivity Phased Arrays for Radio Astronomy and Satellite Communications written by Junming Diao and published by . This book was released on 2017 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Poynting streamline approach develops to understand the properties of a receiving antenna and the mutual coupling effects between array elements. This method has been successfully used to generate effective area shape for many types of antennas and guide the design of a superdirective antenna. Motivated by this method, a superdirective antenna is experimental demonstrated.
Download or read book High efficiency Passive and Active Phased Arrays and Array Feeds for Satellite Communications written by Zhenchao Yang and published by . This book was released on 2015 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Limited scan range electronic beam-steering with a parabolic reflector fed by an active array feed which only needs gain control was demonstrated experimentally, leading to a low cost and effective solution for active beam scanning. A cost-effective flat-panel phased array with limited scan range electronic beam-steering was proposed by tiling high efficiency 4 x 4 passive subarrays and performing beam scanning at the tile level. The sidelobe issue was also investigated to comply with the pattern mask requirement set by FCC.
Download or read book Phased Array Antennas written by Arthur A. Oliner and published by . This book was released on 1972 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimized Systems and Calibration of Millimeter Wave Phased Arrays for 5G SATCOM and Radar Applications written by Zhe Zhang and published by . This book was released on 2021 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phased array technologies has been in development for many decades but primarily in defense industry with large complicated systems and excessively high cost. With the recent advances in silicon chips and printed-circuit board (PCB) manufacturing, planar phased arrays can be built on a PCB in a compact form with drastically lower cost. The new 5G communication standards also utilize millimeter wave bands that require phased arrays with high effective isotropic radiated power (EIRP) and beam steering capabilities. The 5G systems, with the fast growing industry of satellite communications on-the-move, and millimeter wave automotive radars used for self-driving technologies, contribute to a giant market in need of a large amount of low cost phased arrays. This dissertation focuses on such commercial-use phased arrays, studies their artifacts and how to eliminate them, provides solutions to optimized phased-array systems, and proposes calibration methods essential for their performance. First, it presents the intersymbol interference (ISI) caused by the phased array when it is scanned with a simple effective equalization scheme, and then, it presents a TX/RX phased-array system with a reduced number of randomly distributed elements that is optimized for radar applications. This dissertation also presents a new method for phased array calibration based on 2x2 sub-arrays that is more robust across different scan angles and yields better performance while reducing the measurement time. Finally, a method to measure the error vector magnitude (EVM) of the phased array in the near-field is presented, which can be used to verify the calibration and performance of phased arrays in communication systems when they are deployed in the field.
